... message #5 : from AR+SRi, Mar 97, about the ADC cards and the filter/clock box. message #6 : from AR, Mar 97, about the limiting magnitudes after the March 97 run. message #7 : from AR, May 97, about the characteristics of the new filter/offset box. message #8 : from AR, Aug 97: the FIRPO photometric system and recommendations. message #9 : from SRi, Aug 97: more on the new filter/offset box, and the use of a generator as a clock. message #10 : from AR, Feb 99: about the new and old FIRPO setup. ...